1. (a) Owners and operators of underground storage tank systems regulated by this Chapter must maintain release detection records for three (3) years.

2. (b) Owners and operators of underground storage tank systems regulated by this Chapter who use cathodic protection ("CP") must maintain the following records.

   1. (1) Original cathodic protection design with drawings, plans, description of materials used, and suitability study depicting all of the cathodic protection system components in accordance with National Association of Corrosion Engineers (NACE) SP0285.
   2. (2) Rectifier readings for impressed current systems conducted at least every 60 days on the appropriate OCC form.
   3. (3) Results of the last three inspections or cathodic protection system tests completed by a licensed corrosion protection tester.
3. (c) If observation wells are used as release detection, the PSTD approved site assessment must be maintained on site.
4. (d) Written documentation of all calibration, maintenance, and repair of release detection equipment permanently located on-site must be maintained for at least three (3) years after the servicing work is completed. Any schedules of required calibration and maintenance provided by the release detection equipment manufacturer must be retained for five (5) years from the date of installation.

Added at 18 Ok Reg 2378, eff 7-1-01

Amended at 21 Ok Reg 2036, eff 7-1-04

Amended at 22 Ok Reg 1730, eff 7-1-05

Amended at 23 Ok Reg 2261, eff 7-1-06

Amended at 25 Ok Reg 1867, eff 7-1-08

Amended at 34 Ok Reg 935, eff 9-11-17

Amended at 41 Ok Reg, Number 23, effective 10-1-24